The Interaction of Granite with Aqueous Sodium Carbonate
- Key words
- Exploration; Granite; NaCo2; NaCl; Silica; New Mexico; USA
- Conference
- Geothermal Resources Council Transactions
- Year
- 1977
- Session
- Exploration; Granite; Geochemical surveys; Sodium carbonate
- Language
- English
Abstract
The interaction of granitic rocks with aqueous sodium carbonate was studied at 200° in Teflon lined steel bombs. The experiment are described. As expected, the amount of dissolved silica increased with increasing sodium carbonate concentration and with increasing time, but by 96 hours had leveled off at a value determined by the sodium carbonate concentration. The rates can be correlated by the rate law d(Si)2 aq)/dt=ak(SiO2 sat aq - SiO2 aq) where a is the ratio of rock surface area to solution volume and k is a function of the temperature, the rock type, fluid velocity, and various other parameters of the system.
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